I am getting part a and b wrong. Can someone explain and provide correct answer?

In this problem, we explore the effect on the standard deviation of multiplying each data value in a data set by the same oonstant. Consider the data set 5, 1?, 9, 1?, 12. {a} Use the dening formula, the computation formula, or a calculator to compute 5. {Round your answer to one decimal place.) s=x [b] Multiply each data value by 6 to obtaln the new data set 30, 102, 54, 102, 7'2. Compute 5. {Round your answer to one decimal place.) s=x